secant method

English

Noun

secant method (uncountable)

  1. (mathematics) An iterative numerical method for finding a root of an equation f(x)=0, using a succession of roots of secant lines to better approximate the root.

Usage notes

It is defined by the recurrence relation xn+1=xn−f(xn)xn−xn−1f(xn)−f(xn−1), where n=1,2,3,..., and x0 and x1 are initial values.

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